Re: Compressing PDF Size

Subject: Re: Compressing PDF Size
From: Shlomo Perets <shlomo2 -at- microtype -dot- com>
To: Keith Hansen <KRH -at- weiland-wfg -dot- com>
Date: Fri, 20 Oct 2006 08:40:26 +0200

Keith,

You wrote:

I use Acrobat 7.0 Professional. Under the File menu, there is a Reduce
File Size option. If the PDF has already been created, you can open it
up and use this to reduce file size.

I ran it on my 3MB PDF. It reduced file size considerably, with no
apparent side effects. Has anyone experienced problems using this?

The "Reduce File Size" applies a mix of actions, including
resampling/recompressing images, unembedding fonts, clearing duplicate
background images and (depending on Acrobat compatibility selected) may
also apply additional compression to some file components (which will limit
opening the PDF to specific Acrobat versions).

Resampled images may be fine if the PDF is primarily viewed online
at low magnifications (100% or lower). Depending on the original
resolution and the resampling value used, problems may be visible
when you display the graphics at zoom levels of 200% or 300%,
which could provide a hint as to the print quality.
You mentioned that "low-quality printing" if OK, but I assume this
to relate to "office-printing" as opposed to "high-end press printing",
i.e. I am not sure you want low-quality, blurry screen captures
(all too common, unfortunately, see http://www.microtype.com/Hmmms.html).

3MB size may be just fine, depending on the document page count
and its content (eg many screen captures). You can try the Audit
Space Usage function (Advanced > PDF Optimizer) to get an idea
as to what items are taking up space, and proceed from there.


Shlomo Perets

MicroType, http://www.microtype.com * ToolbarPlus Express for FrameMaker
FrameMaker/Acrobat training & consulting * FrameMaker-to-Acrobat TimeSavers/Assistants
Template Design, Single Sourcing, FM-to-PDF & Technical Indexing seminars



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References:
RE: Compressing PDF Size: From: Keith Hansen
Re: Compressing PDF Size: From: stevefjong

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